Penalosa should be a lock for top five, probably for top 3. Granted the guy was a defensive genius so he didn't get hit a lot but his chin was beyond titanium. His performance against Juanma alone should guarantee him top five.
V.K. and Evan Fields for sure....... Ollie McCall and Hector Camacho, as well...... Solid beards there...... MR.BILL
Vitali hasn't fought many punchers and hasn't taken all that much since his comeback. Highly overrated chin IMO.
Most of the Vitali chin rep comes from the Lewis fight. I think the shots he took in that fight would have KO'd most other heavyweights. Especially that uppercut...
Wayne McCullough is a must in a top 5 list. Considering he was a natural bantamweight who fought Morales and Hamed at their prime weights. They were not just great punchers he fought, they were physically bigger too.
McCulloughs chin was laughable. Genuinely laughed at the shots I've seen him take, it's sometimes incomprehensible. Especially as he didn't do anything particularly special offensively and was a top level fighter for years over several weights.